[TASK] Raise typo3/testing-framework to 6.4.7

Contains a change for an upcoming workspace related
core patch.

composer require --dev typo3/testing-framework ^6.4.7

Change-Id: I11980b635e3a2b00de481a8d73b69368554c08d3
Releases: master, 10.4
Resolves: #92818
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/66603
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>

composer.json

@@ -94,7 +94,7 @@
 		"phpstan/phpstan": "^0.12.44",
 		"phpunit/phpunit": "^8.5.2",
 		"typo3/cms-styleguide": "~10.0.4",
-		"typo3/testing-framework": "^6.4.6"
+		"typo3/testing-framework": "^6.4.7"
 	},
 	"suggest": {
 		"ext-gd": "GDlib/Freetype is required for building images with text (GIFBUILDER) and can also be used to scale images",

typo3/sysext/core/composer.json

@@ -72,7 +72,7 @@
 		"phpspec/prophecy": "^1.7.5",
 		"phpstan/phpstan": "^0.12.44",
 		"typo3/cms-styleguide": "~10.0.4",
-		"typo3/testing-framework": "^6.4.6"
+		"typo3/testing-framework": "^6.4.7"
 	},
 	"suggest": {
 		"ext-fileinfo": "Used for proper file type detection in the file abstraction layer",